344 



OHNO. 



Table 2. — Differentiation of the cholera vibrio according to its morphology into 



four groups. 



I. GROUP "RODS." 



Se- 

 ries. 



Morphology of the cholera strains studied by Kolle 

 and Gotschlich. 



Number of 



strains 

 collected. 



Percent- 

 age. 



1 

 2 

 3 

 4 

 5 



Moderately long curved rods 



Short well-curved rods __ __ _ . _ .. 



7 



1 

 6 

 6 



- 41.535 



Very long slender rods _ 



Long, slender and curved rods _ _ _ 



Moderately long and moderately slender rods 



II. GROUP "VIBRIO." 



Rather long and thin, very slightly curved _ 



Moderately long, curved 



Fairly well curved ^ 



Fairly well curved 



Short, only slightly curved 



Very short, curved 



Short, curved 1 



Well curved, very short 



Short, moderately slender 



40.000 



III. GROUP "COMMA FORM.' 



Thick and short 



Moderately long comma. 



Short 



Short, slender 



15.3.53 



IV. GROUP "COCCO BACILLUS. 



19 

 20 



Short almost a coccus 



1 

 2 



1 



4.C16 



Short and thick - 



Total . — _ - 





65 









Per cent. Per cent. 



Cocci form, Group IV = 4.616) 16 923 



Bacillus form, series 3+5+6 = 12.307 i 



Curved form, series 1+2+4 = 30.768 



Total 57.691 



With regard to morphology^ the cholera organism may be said to 

 assume four f onus : 



1. The bacillary form, which varies in length and thickness. 



2. The typical vibrio fonn, which shows variation in the degree of 

 curving, in length, and in breadth. 



